Excavating machine



May 8,. 192-3.

R. E. WILT EXGAVATING MACHINE 3 Sheets-Sheet 1,

Filed April 5 19 21 memes ay 8, 1923;

-' ROY E. win, or ABCANIIIMQOHIO. I

Men? EXGAVATING MACHINE.

Application filed April 5,

To all whom z'tmidy concern:

Be it'known that I, RoY E, Wm, acitizen of the United States, residingat Arcanum, in-the county of Darke, State of Ohio, have invented, a newand useful Excavating Machine; and I do hereby declare the following tobe a full, clear, and exact description. of the invention, such aswillenable others-skilled in theart to which it appertainsl to make anduse the same The invention relates to excavating machines of the pivotedboom type, and has for itsobject to-provide a machine of this'characterwherein a traveler is mounted in the boom, which traveler islongitudinally movaable and controlled by a cable, and isprovided with adownwardly'extending'digging element, the angle of which digging elementthe machine through the i'scontrollable from a point on the frame ofpivotal point of the mast and the boom.

A further object is. to provide an excavating machine of the boom type,on which boom a traveler is movable andprovided with a digging elementunderslung in relation to the boom, said boom being univer- Q throughthe lower pivotal point of the mast,

sally connected toth'e mast of the machine,

A further object is to provide a ,univer sal connection between the boomand mast, said connection comp-rislng a U-shaped q member pivotedhorizontally to the mast and adapted to move in a vertical plane,

the outergend of said U-shaped member terminating in a boss, on. whichboss is pivotally mounted the rear end of the boom, said boom being sopivoted that it will pivot in 4 a vertical plane transversely. Also toprovide a brake band cooperating with the rear end of the boom forholding said boom against pivotal action if so desired; Also to providemeans comprising gearing and shafting for transmitting poweriipwardly"on each side of the boom,

transversely vdisposed v outwardly through the-pivotal points of: the Iboom and thence outwardly, over shaftin to a traveler which is d thencedownwardly cable controlled, .a'n

manipulating .thedigging element.

for -.controlling and A A further object'is-to provide in combinationwith a; boom a traveler movable on said -bo'om', said travelercomprising spaced plates disposed pivotally mounted on downwardly extendmg IlglCl arms, ashaft having gears at its ends extending through sitelyextending arms carried by the ends of said shaft and having linkconnections with the digging element in such a manner as to form aparallel movement, a shaft 1 extending through the plates" and disposedabove the boom, the

ends of said last named Shaft being the plates, 'oppoprovided with gearsmeshing Wlth tll first mentioned gearsand 'formof an excavating machine,I

a-dig'ging element.

ing means for varying the, angle of the dig-i;

glIIQ element.- nally disposed shaft rotatably mounted in bearingscarried by tudinally disposed ys aft, having :a worm Also to provide a'longitudithe-boom said longi I slidablyfl mounted thereon, which wormmeshes with a worm .gear carried by the the boom, andby meansnally'disposed shaft t e angle of the digging element may be variedduring the longitudinal movement of digging element.

With the above andother obiectsin View the invention resides in thecombination and arrangement of parts as hereinafter set shaft locatedabove of which longitudithe traveler and theforth, shown in thedrawings, described and claimed, 'it being "understood that changes intheprecise embodiment of the invention may be made within the scope ofwhat is claimed without,departing from-the spirit of,the invention. 7 Iw In the drawings Figure 1 IS a side elevation ofthe excavating machine.

taken on line 2-2 of Figure l Figure 3 is a sectional view taken on line3-3 of Figure 1, showing the boom and traveler in top plan.

Figure 4 1s a ve-rtlcal sectional view-taken -on line 4-4 of Figure 1;

. Figure 5 taken on line 5-5 of Figure 1'.

1s a horizontal sectional view/ Figure 2 is a horizontal sectional viewFigure 6'i s a detail perspective view-of v the rear end of the boom,showing the brake band for locking the boom against pivotal action.

Figure 7 is a detail sectional View. vertically through the lower end ofthe -mast,.

mast 6 is formed from spaced bars which are integrally joined at theirupper ends and terminate in a reduced cylindrical portion 7 which has abearing in the mast cap 8, the mast being adapted to be pivoted in itsbearings 4 and the bearing of the cap .8. Secured to the mast 6 adjacentits lower end is a horizontally disposed turntable 9, around whichturntable a cablewlO extends,

said cable extending rearwardly and over a drum 11, wh ch drumas rotatedfrom the main drive shaft 12 through the medium of the gears 13, shaft14 and shiftable clutch 15, and by means of which clutch the directionof rotation of the drum l1 maybe changed as desired. A brake 16 of theband type is utilized for cooperating with the drum 11 for holding thesame against rotation after the mast has been rotated to the directionposition. The main drive shaft 12 is driven by a conventional form ofsteam engine 17, which gets its source of power from a boiler 18, saidengine a and boiler is on the platform 1, preferably adjacent its rearend, however it is to be understood that the controlling mechanism forthe various cables may be of any construction and located any placedesired on the platform 1 and that the particular positioning of thevarious drums and the particular construction of said drums and,controlling mechanism is primarily for the purposes of -illustration, ofcontrolling means for the cables hereinafter set forth.

Extending transversely through thesmast' 6 is a shaft l9, to the outerends of which I shaft are pivotally connected the arms 20 of a U-shapedyoke 21. The end of the U-shaped yoke 21 is provided with a cylindricalboss 22, which is disposed in the aperture 23 of the rear end .24 of theboom 25. The boom 25 is pivoted on the cylindrical boss 22 in such amanner that it will pivot on its axis, and at a'right angle to thepivotal movement of the yoke 21, therefore a universal pivotal action isobtained for the boom, the purpose of which will presently appear.However at times it is desirable to lock the boom 25 against axialpivotal movelever 29 is provided, which lever is pivotally mounted as at30 on the' side of the yoke .21 and hasits end pivotally connected at 31to the band 26. It will be seen that when the lever 29 is rocked thatthe brakeband 26 will be, forced into or out of engagement with thesegmentally shaped portion 28 for holding or releasing the boom 25. Thepivotedlever 29 may be held in various positions by any of the notchesof the rack bar 32 carried by the side of one of the arms 20 oftheyol-ie 21 Longitudinally movable on the boom 25 is a traveler 33,which traveler comprises spaced plates 34 disposed to theoutside of thesidesof the boom 25, said'plate's being connected together bytransversely disposed shafts 55, on which shafts are mounted flangedrollers 36, which rollers engage the upper surfaces of the side bars ofthe boom 25 in such a manner that the traveler 33 may movelongitudinally in either direc= tion on the boom 25. Disposedbeneath theside rails of the boom 25 and pivotally mounted on shafts 37 carried bythe plates 34 are rollers 88, which rollers engage theunderside of theboom and prevent tilting of the traveler as a whole. during itslongitudinalmovement. It will be seen that the traveler as a whole isroller supported and that it will easily move longitudinally 0n the boomduring an excavating operation. Extending transversely through theplates 34 and disposed below the boom 25 is a shaft 39. which shaft isprovided adjacent its ends with gears 40 which mesh with gears 41carried by the ,ends of the shaft 42 which extends through the plates 34at a point above the beam 25. It will be seen that when the shaft 42 isrotated that thegears 4O willalso rotate and consequently the shaft 39located beneath the boom will be rocked 39 are bars'41, the arms ofwh'ich extend in opposite direction and have pivoted to their ion endsas at 42 downwardly extending links 43, the lower ends of which arepivotally connected as at 44 to a digging shovel 45. The pivotalpoints44 and the pivotal points 42 are of equ'al distance with relation toeach other thereby forming a parallel movement which will maintain thebars 41 in parallel relation to the shovel 45 at all times, therebyallowing positioning of the shovel in a horizontal plane for taking asmall cut off the road, and also allowing the forward cutting edge ofthe shovel to be positioned for a diggmg operation or in a positionwhere it willlcut way from the The shovel 45 is pivotally mounted at '46on downwardly. extending 'rigid arms 47 of the traveler, and on whicharms the 5 shovel. pivots at all times. Rotatably mount- 'f'jd inbearings 48 of brackets extending upwardly from the" boom 25 is a '-.shaft" 49,

on. which shaft is'KSIidabIy keyeda -wormj 50;

I .-The worm 5O meshes with-a worm gear. 51. 10'.

carried by the shaft 42. It 'willbeseen that "when the shaft 49.r'otateslthatthe'fworm 5Q will alsoflrotate vand rotate; theshaft 42through thej-worm'gear'51; Whe'nthisac tion takes place the arms of thebars 41? 15 are rocked. and consequently the yShovel fistiltedac'cording -to the rotation of the shaft 49 and the digging shovelcontrolled. in its pivotal movement in a longitudinal vertical. plane;By s'lidablykeyingthejvorm 50 on. the'shaft' 49 it will be seen that asthe traveler 33 -moveslongitudinally, in either direction that the worm50 will also ,move longitudinally on the-shaft 49 and will at all'timesbe in a position where it will operate the digging' rnechanism,

which cable extends outwardly and over ;a "pulley 52 and thence upwardlyand rearwardly over a pulley 53. and .has'its free end 54extendingaround a drum 55, said cable then extends upwardly as at 56.and

I direction of themachine-by the cable end connected to the bail 60 andthe traveler as a whole is moved outwardly in the, di-

end of the cable which passes over the pulley 52 and is .connected as.at 51 to the shaft 35.' It will be seen that the traveler and thedigger" is under control of the op-' erator at all times during thedigging operation and that a thin cut or a'heavy cut may be taken fromthe road bed as desired. Also the machine may be usedfor ditchingpurposes.

The boom 25' is lowered and raised during a digging operation throughthe medium of the block and fall 63, the lead end of the rope of whichis designated .by the numeral 64 and extends overa pulley 65 carried bythe mast 6, said lead end extending downwardly and passes around theclutch controlled drum 65 which is alsooperated from the maindrive shaft12 throughthe' medium of the bevel g'ears66. During a digging andhoisting operation the boom 25 Connected to the 'shaft37 is a cable51*,-

rection of the end of the boom by the other tion'jsothe ground Theboommay also be" raised during the dumping operation which dumpingoperationxis accomplishedby ex- -trem'e itil-ftingfof -theshovel, -45. i .lx'jTheif ner'endof'thesh' ft 49is provided I a. Qgait 67 .which .gear islocated. ad-- jacent 't'he- Segmental ortion 28. of the end 24of'theghoom 2.5. '7

ar 67lmeshes; with" ground." may b e'f rai sed or lowered as. desiredfor properly positioning'the shovel 25 in rela-..-

a gear. 68- carried byashaft 6 9, whiohf-shaft;

is rotatablymounted in abea'ring 70 of the 3i cylindrical extension 22'of the yoke-'21.- "It {will-be seen that the shaft69is axially dis-v 4posed infrela'tioii. to-"the pivotal point-of the'boom 25 andconsequently the gearI-(ST willm'oveon the 'properarc during the'piv;

otal action-ofthe boom'fthereby-=preventing. f bindingofthe gears 67:.and 68 during the I 1 pivotal action ofthe boom. Shaft.69xex'--.

tends rearwardly and is provided with a .bevel gear-71,. which-mesheswith a'lbevel.

gear 72 carried by the shaft 19. Mounted on l the platform '1- arebrackets 73, and'i'nbear ings of which the pintle's'of the sprocketswith the m'a'st 6-is atran sversely disposed shaft 75 which .'-isprovidedwith a sprocket 76 and around said sprocket 76 and, the sprocket74, a chain 77 extends through themediu-m of said 'chain the shaft- .75is'.

rotated. However it is to be understood that 1- thechain maybeeliminated and shaft driv-f -ing' mechanism'substituted'therefon. EX- Ttending vertically through the reduced 'por' tion 5 of'the mast 6I-isaverticallydisposed"- shaft 78. The upper end of the-shaft/ZSI r isprovided with a .bev'el gear 79. which meshes withthebevel gear 72-w-hile the 174 are rotatably mounted. Disposed beneath I the platform 1and preferably in alignment'.

lower end of the shaft 78 is providedwith I a bevel gear 80,W.hi'ch.meshes with a bevel= I gear 81 carried by the transverselydisposed'shaft 75. sprocket-74 is rotated that. shaft 75', 'vertif It will .beseen. that. wh

10: Cally disposd' shaft transversely. "dis-" 2' posed shaft 19, shaft-69 and 49' \vill b 'tatedthereby allowing the'operator'to con.-

' trol. the digging element in its movement from a point adjacent therear end, of the" platform l in such a manner that the op'erajtion. ispositive and substantially by; mech-' anism wherein thepoweristransmitted through the pivotal connectionsfof the mast i withthe platform and theboom'with'the mast. One of the pintles of thesprocket 74 1 .1

is provided with a beveled 'gear 82',- with 4 which beveled gear thegears 83 ofa shift, able clutch meniber 74 maybe meshed hereby .a,rotation in. either direction may 'be direction of rotation. of theshaft; 49.-The

imparted to the shaft'.75 for reversing the clutch member" 84: isslidably. keyed on -'a shaft 85 which shaft has a beveled gear. no

connection ,86;wit'h the main drive shaft mounted (in the The inventionhaving been set forth What is claimed as new and useful is:-

I. In a device of the class described, the combination 'w'itha boom,of-a traveler longitudinally movable on said boom, said .traveler havinga shaft rotatably mounted angles thereto, a worm slidably keyed on saidshaft disposed above the upper shaft and meshing with the centrallydisposed 5 gear of the upper shaft and forming means for operating thegear connections between the upper andlower sh its and varying theposition of the digging sho'v'elth'rough the parallel connections.-

2. The combination with a traveler mount ed on a boom of an excavatingmachine, of a digging shovel carried by said traveler, downwardlyextending arms carried by the traveler, said digging shovel beingpivotallydownwardly extend ng n arms, mechanism carried by. the travelerwhereby the digging shovel may be controlled in its pivotal movement ina longitudinal vertical plane, andlink connections between the diggingshovel controllingmech anism and the digging shovel.

3. In a device of the class described, the

combination with a traveler mounted on a boom, of a digging shovelcarried by said traveler, downwardly extending arms carried by thetraveler, said digging shovel being pivotally mounted on the downwardlyextending arms, ashaft extending through the traveler and disposed abovethe boom, a shaft extending through the traveler and disposed below theboom gear connections between said shafts, oppositely extending armscarried by the ends of the shaft below the boom, parallel linkconnections between the end'sof the oppositely extending arms and theends of the digging shovel and shaft and gear connections whereby saidparallel link connections may be controlled from a remote point and thedigging shovel piv; otally moved in a longitudinal vertical plane.

4. The combination with an excavating machine comprising a boom carriedby a 'mast, of a traveler carried digging element longitudinally movableon the boom, said boom comprising two aligned sections, a pivotalconnection between the boom sections element. of the traveler beingdisposed be-" ivoted section thereof, said pivotal connection of theboom low the boom and on the fromaligned sections extending outwardly,

from the mast, a traveler movable 0n the boom, a downwardly extendingdigging element carried by the traveler and disposed beneath the boom,of a pivotal connection between the boom sections and spaced from theends of the boom and forming means whereby said digging element willmaintain its relative vertical relation to the boom at all tunes byaxial movement of the outer boom section.

6. The combination with an excavatingmachine comprising a mast, a boompivoted to the mast and movable in a vertical plane,

said boom being formed from pivotally connectedaligned sections, saidboom having a traveler mounted thereon, a downwardly extending diggingelement carried by the traveler and disposed below the boom, saidpivotal connection in the boom being spaced from its ends, means carriedby the traveler for controlling the digging element and means forcontrolling the last named controlling meansfrgm a remotepoint.

7Q The combination with an excavating said mast and movable in avertical plane, said boonrhaving a traveler mounted thereon, a diggingelement carried by the traveler and located below the boom, said boombeing formed from aligned sections, of a piv otal connection between theboom sections and forming means whereby the weight of the diggingelement will cause pivotal movement of the outer boom section axially onwhich the digging element is disposed and the digging element maintainedin the same vertical plane during its operation, controllable mechanismcarried by the traveler for controlling the digging element and meanswhereby power is transmitted to the controllable mechanism through thepivotal connection of the boom sections.

8. The combination'with an excavating machine having a verticallydisposed pivoted mast, a boom pivoted to the mast and movable in avertical plane, said boom being formed from aligned sections, a travelermounted on the boom and movable on the outer s ction, a digging elementcarried by the traveler and longitudinally movable therewith andextending downwardly below the boom, of a pivotal connection between theboom sections and forming means whereby the digging element willmaintain a vertical position by gravity by an axial movement of theouter boom section, cable means for movmachine having a mast, a boompivoted to ing the traveler longitudinally in either direction,controlling mechanism carried by the traveler forv controlling thedigging element carried thereby, shaft and gear connections wherebypower may be imparted to the digger controlling mechanism of thetraveler from the body of the machine, said gear and shaft connectionstransmitting power through the pivotal points of the pivoted 10 mast andthe pivotal connection of the boom to the traveler When said traveler isin various longitudinal positions.

In testimony whereof I have signed my name'to this specification in thetwo subscribing witnesses.

Witnesses:

BLANCHE DECKER, Jol n STENTZEL.

presence of a ROY E. WILT.

